Cricket2, it is not so much his IQ number or even the term PG that has me thinking partial homeschooling for him at some point. It is his extreme desire for learning and how fast he learns. I hope I am wrong and that they (the private school he will be going to) can support him by subject acceleration and probably another grade skip down the line.(He is starting K early already)
I am planning on keeping him in school full time unless he starts to become unhappy with it. The great thing about him (and Silverman at the GDC pointed this out)is that he is a BIG kid. Very tall. so he could easily skip another grade without him being noticeably shorter. Also his handwriting is incredibly neat and quick. Something I guess PG kids can be lagging in.
This will come in handy if he gets into a class with much older kids. Apparently his processing speed surprised them all as well.
So if we can, subject acceleration and grade skip would be preferable. The school has said they are willing to work with him. And now I have the WJ-III to show them as well. Hopefully they will see that as a guide in what to do with him.